thodg/got

diff --git a/got/got.1 b/got/got.1
index bcf1646..e7e0621 100644
--- a/got/got.1
+++ b/got/got.1
@@ -371,6 +371,10 @@ with one the following annotations:
 .El
 .It Fl d Ar name
 Delete the branch with the specified name from the repository.
+Only the branch reference is deleted.
+Any commit, tree, and blob objects belonging to the branch
+remain in the repository and may be separately removed with
+.Xr git-gc 1 .
 .El
 .It Cm br
 Short alias for